RE: rman configuration

From: Joe Smith <>
Date: Fri, 6 Jun 2008 14:54:29 -0500
Message-ID: <BLU108-W285AF78D03846875C0713397B70@phx.gbl>

I have controlfile autobackup on and it is going to tape as seen from the list backup command below. I was wondering if the default behavior was to snapshot the controlfile to disk even if the backup is going to tape.      

BS Key Type LV Size Device Type Elapsed Time Completion Time------- ---- -- ---------- ----------- ------------ ---------------10663 Full 5.50M SBT_TAPE 00:00:04 05-JUN-08 BP Key: 10666 Status: AVAILABLE Compressed: NO Tag: TAG20080605T095515 Handle: control_c-1184362752-20080605-03 Media: Control File Included: Ckp SCN: 592220 Ckp time: 05-JUN-08 SPFILE Included: Modification time: 05-JUN-08 RMAN> Subject: RE: rman configurationDate: Fri, 6 Jun 2008 12:03:12 -0700From: Brandon.Allen_at_OneNeck.comTo:;;

That's mostly correct, just backwards on one point - it's to sync the catalog from the controlfile (the authoritative source), not the other way around. But you are correct that it's just a temp file not needed for restore/recovery operations, so to the OP - no need to change it. In fact, I don't think you can change it to tape. Maybe you're confusing the snapshot controlfile with controlfile autobackup? They are two completely different things and your controlfile autobackup goes to two places:  

  1. On disk to $ORACLE_HOME/dbs (by default) whenver you make a change to your database structure (add datafile, tablespace, logfile, etc.)
  2. To the same channel type as an rman backup, i.e. if you run a database or log backup to sbt_tape and have controlfile autobackup ON, then it will automatically run a controlfile autobackup to sbt_tape after the completion of the database/log backup.

Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.

Itís easy to add contacts from Facebook and other social sites through Windows Liveô Messenger. Learn how.
Received on Fri Jun 06 2008 - 14:54:29 CDT

Original text of this message